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Abraham M, Dhanuka J, Som S, Pandey MK, Das S. A highly efficient deep red-emitting Mn 4+-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications. NANOSCALE 2024; 16:10690-10705. [PMID: 38695807 DOI: 10.1039/d4nr00787e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
This research mainly highlighted an intense deep red-emitting and Mn4+-powered oxyfluoride nanophosphor, Mg14Ge4.99O16F8:0.01Mn4+ (MGOF:Mn), which was synthesized via adopting a scalable synthesis route for commercial temperature sensing and artificial plant growth applications. The electron microscopic analysis confirmed the formation of nanosized particles without any defined shape or size distribution. The obtained nanophosphor exhibited sharp emission peaks at 659 nm and 631 nm under UV (317 nm) and blue excitation (417 nm) owing to Mn4+:2Eg → 4A2g and Mn4+:2T1g → 4A2g transitions, respectively. The emission spectrum is situated in the deep red region of the CIE color diagram where the red color purity approached 100% under both the excitations. The absorption efficiency and the internal and external quantum efficiencies of this red-emitting system were calculated to be 53%, ∼77%, and ∼41%, respectively, under blue excitation of 417 nm, which indicated its potential for indoor plant cultivation. A prototype red LED was fabricated by pasting the red-emitting MGOF:Mn4+ nanophosphor powder on a 410 nm blue LED chip. The resulting electroluminescence spectrum overlapped with those of the important organic pigments of normal plants. Importantly, the thermometric properties of the nanophosphor were evaluated in detail for FIR and lifetime-based thermometry applications. The examined nanophosphor showed an extreme absolute sensitivity of 0.00326 K-1 at 373 K with excellent reproducibility and temperature resolution. Because of the small particle size and high luminescence efficiency, the nanophosphor could be implemented in various nano-devices where non-contact optical thermometry is necessary for high performance.
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Affiliation(s)
- Malini Abraham
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala 695019, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Jatin Dhanuka
- School of Science and Humanities, Shiv Nadar University Chennai, Tamil Nadu 603110, India.
| | - Sudipta Som
- School of Science and Humanities, Shiv Nadar University Chennai, Tamil Nadu 603110, India.
| | - Mukesh K Pandey
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Subrata Das
- Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala 695019, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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Li J, Fu J, Lin J, Chen Y, Wen Y, Han M, Chen S, Deng D. Li 4 Zn(PO 4 ) 2 :Mn 2+ thermosensitive phosphor with dual luminescent centres for optical thermometry. LUMINESCENCE 2024; 39:e4692. [PMID: 38383694 DOI: 10.1002/bio.4692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 01/13/2024] [Accepted: 01/23/2024] [Indexed: 02/23/2024]
Abstract
An optical thermometry strategy based on Mn2+ -doped dual-wavelength emission phosphor has been reported. Samples with different doping content were synthesized through a high-temperature solid-phase method under an air atmosphere. The electronic structure of Li4 Zn(PO4 )2 was calculated using density functional theory, revealing it to be a direct band gap material with an energy gap of 4.708 eV. Moreover, the emitting bands of Mn2+ at 530 and 640 nm can be simultaneously observed when using 417 nm as the exciting wavelength. This is due to the occupation of Mn2+ at the Zn2+ site and the interstitial site. Further analysis was conducted on the temperature-dependent emission characteristics of the sample in the range 293-483 K. Mn2+ has different responses to temperature at different doping sites in Li4 Zn(PO4 )2 . Based on the calculations using the fluorescence intensity ratio technique, the maximum relative sensitivity at a temperature of 483 K was determined to be 1.69% K-1 , while the absolute sensitivity was found to be 0.12% K-1 . The results showed that the Li4 Zn(PO4 )2 :Mn2+ phosphor has potential application in optical thermometry.
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Affiliation(s)
- Jie Li
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Jie Fu
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Jianhua Lin
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Yanling Chen
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Yinuo Wen
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Mingxiao Han
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Shuyang Chen
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
| | - Degang Deng
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou, China
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Choi MH, Moon TH, Kuk Y, Ok KM. Green and Red Photoluminescent Manganese Bromides with Aminomethylpyridine Isomers. Inorg Chem 2023. [PMID: 37470154 DOI: 10.1021/acs.inorgchem.3c01573] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Two positional isomers, 4-amino-3-methylpyridine and 3-amino-5-methylpyridine, produce 4-amino-3-methylpyridinium and 5-methylpyridin-3-aminium, respectively, under acidic conditions. The two protonated isomers create different hydrogen bonding networks, resulting in different coordination environments of the [MnX4]2- unit embedded in molecular compounds such as 4-amino-3-methylpyridinium manganese bromide, [(C6H9N2)2MnBr4] and 5-methylpyridin-3-aminium manganese bromide, [(C6H9N2)4MnBr4(H2O)·(MnBr4)]. Both compounds can be prepared using the slow evaporation method or mechanochemical synthetic procedures. Single-crystal structure analysis of [(C6H9N2)2MnBr4] and [(C6H9N2)4MnBr4(H2O)·(MnBr4)] revealed different manganese halide units, including tetrahedral and tetrahedral with distorted trigonal bipyramidal structures, which emit photoluminescence in the green (527 nm) and red (607 nm) regions, respectively. Electronic structure calculations were conducted to support the validity and interpretation of the UV-vis and photoluminescence (PL) spectral data. Thin films deposited using the [(C6H9N2)2MnBr4] precursor also exhibit PL properties. The diverse pseudo-three-dimensional networks can be constructed by using positional isomers with different hydrogen bonding pathways and π-π stacking of organic units, in which the design strategy successfully enables the tuning of various optical properties.
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Affiliation(s)
- Myung-Ho Choi
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Tae Hwan Moon
- Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Yunseung Kuk
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Kang Min Ok
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
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Tong J, Hong F, Li L, Pun EYB, Lin H. Crystal field optimization and fluorescence enhancement of a Mn 4+-doped fluoride red phosphor with excellent stability induced by double-site metal ion replacement for warm WLED. Dalton Trans 2023. [PMID: 37366609 DOI: 10.1039/d3dt01239e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
The effective double-site metal ion replacement strategy was adopted to optimize the crystal field environment of a Mn4+-activated fluoride phosphor. In this study, a series of K2yBa1-ySi1-xGexF6:Mn4+ phosphors with optimized fluorescence intensity, excellent water resistance, and outstanding thermal stability was synthesized. The composition adjustment includes two different types of ion substitution based on the BaSiF6:Mn4+ red phosphor: [Ge4+ → Si4+] and [K+ → Ba2+]. X-ray diffraction and theoretical analysis revealed that Ge4+ and K+ could be successfully introduced into BaSiF6:Mn4+ to form new solid solution K2yBa1-ySi1-xGexF6:Mn4+ phosphors. The emission intensity enhancement and slight wavelength shift were detected in different cation replacement procedures. Furthermore, K0.6Ba0.7Si0.5Ge0.5F6:Mn4+ with superior color stability performance possessed a negative thermal quenching phenomenon. Excellent water resistance was also found, which was more reliable than K2SiF6:Mn4+ commercial phosphor. A warm WLED with low correlated color temperature (CCT = 4000 K) and high color rendering index (Ra = 90.6) was successfully packaged by using K0.6Ba0.7Si0.5Ge0.5F6:Mn4+ as the red light component, and it also exhibited high stability for different currents. These findings demonstrate that the effective double-site metal ion replacement strategy can open up a new avenue for designing new Mn4+-doped fluoride phosphors to improve the optical properties of WLEDs.
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Affiliation(s)
- Junze Tong
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Feng Hong
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Long Li
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Edwin Yue Bun Pun
- Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Hai Lin
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
- Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Hong Kong Special Administrative Region, China
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Yang C, Liu W, You Q, Zhao X, Liu S, Xue L, Sun J, Jiang X. Recent Advances in Light-Conversion Phosphors for Plant Growth and Strategies for the Modulation of Photoluminescence Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111715. [PMID: 37299618 DOI: 10.3390/nano13111715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/20/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
The advent of greenhouses greatly promoted the development of modern agriculture, which freed plants from regional and seasonal constraints. In plant growth, light plays a key role in plant photosynthesis. The photosynthesis of plants can selectively absorb light, and different light wavelengths result in different plant growth reactions. Currently, light-conversion films and plant-growth LEDs have become two effective ways to improve the efficiency of plant photosynthesis, among which phosphors are the most critical materials. This review begins with a brief introduction of the effects of light on plant growth and the various techniques for promoting plant growth. Next, we review the up-to-date development of phosphors for plant growth and discussed the luminescence centers commonly used in blue, red and far-red phosphors, as well as their photophysical properties. Then, we summarize the advantages of red and blue composite phosphors and their designing strategies. Finally, we describe several strategies for regulating the spectral position of phosphors, broadening the emission spectrum, and improving quantum efficiency and thermal stability. This review may offer a good reference for researchers improving phosphors to become more suitable for plant growth.
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Affiliation(s)
- Chengxiang Yang
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Wei Liu
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Qi You
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Xiuxian Zhao
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Shanshan Liu
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Liang Xue
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Junhua Sun
- School of Chemistry and Chemical Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
| | - Xuchuan Jiang
- Institute for Smart Materials & Engineering, School of Materials Science and Engineering, University of Jinan, No. 336 Nanxinzhuang West Road, Jinan 250022, China
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6
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Sreenan B, Lee B, Wan L, Zeng R, Zhao J, Zhu X. Review of Mn-Doped Semiconductor Nanocrystals for Time-Resolved Luminescence Biosensing/Imaging. ACS APPLIED NANO MATERIALS 2022; 5:17413-17435. [PMID: 36874078 PMCID: PMC9980291 DOI: 10.1021/acsanm.2c04337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Colloidal semiconductor nanocrystals (NCs) have been developed for decades and are widely applied in biosensing/imaging. However, their biosensing/imaging applications are mainly based on luminescence-intensity measurement, which suffers from autofluorescence in complex biological samples and thus limits the biosensing/imaging sensitivities. It is expected for these NCs to be further developed to gain luminescence features that can overcome sample autofluorescence. On the other hand, time-resolved luminescence measurement utilizing long-lived-luminescence probes is an efficient technique to eliminate short-lived autofluorescence of samples while recording time-resolved luminescence of the probes for signal measurement after pulsed excitation from a light source. Despite time-resolved measurement being very sensitive, the optical limitations of many of the current long-lived-luminescence probes cause time-resolved measurement to be generally performed in laboratories with bulky and costly instruments. In order to apply highly sensitive time-resolved measurement for in-field or point-of-care (POC) testing, it is essential to develop probes possessing high brightness, low-energy (visible-light) excitation, and long lifetimes of up to milliseconds. Such desired optical features can significantly simplify the design criteria of time-resolved measurement instruments and facilitate the development of low-cost, compact, sensitive instruments for in-field or POC testing. Mn-doped NCs have recently been in rapid development and provide a strategy to solve the challenges faced by both colloidal semiconductor NCs and time-resolved luminescence measurement. In this review, we outline the major achievements in the development of Mn-doped binary and multinary NCs, with emphasis on their synthesis approaches and luminescence mechanisms. Specifically, we demonstrate how researchers approached these obstacles to achieve the aforementioned desired optical properties on the basis of the progressive understanding of Mn emission mechanisms. Afterward, we review representative applications of Mn-doped NCs in time-resolved luminescence biosensing/imaging and present the potential of Mn-doped NCs in advancing time-resolved luminescence biosensing/imaging for in-field or POC testing.
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Affiliation(s)
- Benjamin Sreenan
- Department of Electrical and Biomedical Engineering, University of Nevada-Reno, Reno, Nevada 89557, United States
| | - Bryan Lee
- Department of Electrical and Biomedical Engineering, University of Nevada-Reno, Reno, Nevada 89557, United States
| | - Li Wan
- Department of Physics, Wenzhou University, Wenzhou 325035, China
| | - Ruosheng Zeng
- School of Physical Science and Technology, Guangxi University, Nanning 530004, China
| | - Jialong Zhao
- School of Physical Science and Technology, Guangxi University, Nanning 530004, China
| | - Xiaoshan Zhu
- Department of Electrical and Biomedical Engineering, University of Nevada-Reno, Reno, Nevada 89557, United States
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7
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Zhai BG, Chen MM, Huang YM. Diffusing Mn 4+ into Dy 3+ Doped SrAl 2O 4 for Full-Color Tunable Emissions. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8170. [PMID: 36431655 PMCID: PMC9696492 DOI: 10.3390/ma15228170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/20/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Dy3+ and Mn4+ codoped SrAl2O4 (SrAl2O4:Dy3+,Mn4+) phosphors were obtained by diffusing Mn4+ ions into Dy3+-doped SrAl2O4 via the constant-source diffusion technique. The influences of diffusion temperature and diffusion time on the emissions of SrAl2O4:Dy3+,Mn4+ were investigated. It was found that: (i) efficient red emission peaking at 651 nm can be readily achieved for SrAl2O4:Dy3+ by simply diffusing Mn4+ into SrAl2O4:Dy3+ at 800 °C and above; (ii) the red emission of Mn4+ becomes dominant over the characteristic emissions of Dy3+ when the diffusion temperature is 900 °C or higher; and (iii) the intensity of the red emission of SrAl2O4:Dy3+,Mn4+ is far more sensitive to diffusion temperature than to diffusion time. Our results have demonstrated that full-color tunable emissions can be realized for SrAl2O4:Dy3+, Mn4+ by tuning the parameters of diffusion temperature and diffusion time, which opens up a space for realizing easy color control of Dy3+-doped inorganic materials.
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Brekhovskikh MN, Batygov SK, Moiseeva LV, Vasil’ev PN, Glushkova VV, Efimov NN. Synthesis, Optical Properties, and EPR of Fluorozirconate Glasses Doped with Manganese Ions. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622600733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Brekhovskikh MN, Kirikova NY, Moiseeva LV, Kozlov VA, Kondratyuk VA, Makhov VN. Luminescence of Fluorozirconate Glasses Containing Cerium and Manganese Ions. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s003602362207004x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Kalyani NT, Jain A, Dhoble SJ. Persistent phosphors for luminous paints: A review. LUMINESCENCE 2022; 37:524-542. [PMID: 35102701 DOI: 10.1002/bio.4203] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 11/10/2022]
Abstract
The paper briefly reports the fundamental scientific principles and landmarks in the field of luminescence and further enlightens the importance of persistent phosphor that is now widely used in luminous paints. Its main focus is on phosphorescence that makes use of lanthanides that have gained paramount importance in various cross-sections of luminescent applications.. Both inorganic and organic afterglow materials, synthesis and characterization along with skilled researchers' essential updates on emerging trends and efforts are elucidated at length. It exclusively reviews the red/green/blue organic/inorganic/hybrid phosphorescent materials and the latest advances in the development of novel long afterglow materials that can accelerate the green technology in the world of luminescence.
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Affiliation(s)
- N Thejo Kalyani
- Department of Applied Physics, Laxminarayan Institute of Technology, Nagpur, India
| | - Abhilasha Jain
- Visvesvaraya National Institute of Technology, MME department, Nagpur, India
| | - S J Dhoble
- Department of Physics, R.T.M. Nagpur University, Nagpur, India
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Wang Z, Lin H, Zhang D, Hong R, Tian Y, Chen J, Zhou S. Reidinger defects induced thermally stable green emission from Eu2+, Mn2+ co-doped Ba0.75Al11O17.25 transparent ceramics. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2021.09.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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12
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Tripathi N, Akai T. Structural designing of Zn 2SiO 4:Mn nanocrystals by co-doping of alkali metal ions in mesoporous silica channels for enhanced emission efficiency with short decay time. RSC Adv 2021; 11:36348-36353. [PMID: 35492797 PMCID: PMC9043469 DOI: 10.1039/d1ra05515a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/18/2021] [Indexed: 12/18/2022] Open
Abstract
High purity Zn2SiO4:Mn crystals were synthesized by impregnating a precursor solution into mesoporous silica followed by sintering process. The effects of doping alkali metal ions (Li+, Na+, K+) on the structural, morphological and photoluminescence properties were investigated. Formation of single phase α-Zn2SiO4:Mn crystals was confirmed from X-ray diffraction. The crystal size was significantly decreased from 54 nm to 35 nm with increasing molar concentration of alkali metal ion dopants in Zn2SiO4:Mn. Zn2SiO4:Mn crystals co-doped with alkali metal ions showed stronger emission and faster decay times compared to the un-doped Zn2SiO4:Mn phosphor. The highest emission quantum yields (EQEs) of 68.3% at λexc 254 and 3.8% at λexc 425 nm were obtained for the K+ ion doped samples with Mn2+ : K+ ratio of ∼1 : 1. With alkali metal ions (Li+, Na+, K+) co-doping, the decay time of Zn2SiO4:Mn crystals was shortened to ∼4 ms, whereas the emission intensity was elevated, with respect to un-doped Zn2SiO4:Mn crystals. Zn2SiO4:Mn crystal growth in silica pores together with selective doping with alkali metal ions paves a way forward to shorten the phosphor response time, without compromising emission efficiency. Alkali metal ions co-doped Zn2SiO4:Mn nanocrystals were synthesized in a mesoporous silica matrix using solution impregnation method. A high PL-QY of 68.3% at λexc 254 nm and 3.8% at λexc 425 nm with faster decay time of <5 ms is obtained.![]()
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Affiliation(s)
- Neeti Tripathi
- Nanomaterials Research Institute (NMRI), National Institute of Advanced Industrial Science and Technology (AIST) Kansai Center, 1-8-31 Midorigaoka Ikeda Osaka 563-8577 Japan
| | - Tomoko Akai
- Nanomaterials Research Institute (NMRI), National Institute of Advanced Industrial Science and Technology (AIST) Kansai Center, 1-8-31 Midorigaoka Ikeda Osaka 563-8577 Japan
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Site occupation and energy transfer in full color emitting phosphor Ba2Ca(BO3)2:Ce3+(K+),Eu2+,Mn2+. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.09.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Wang Y, Guo H. Research Advances on Human-Eye-Sensitive Long Persistent Luminescence Materials. Front Chem 2021; 9:654347. [PMID: 34026723 PMCID: PMC8138154 DOI: 10.3389/fchem.2021.654347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/19/2021] [Indexed: 11/13/2022] Open
Abstract
Based on the actual application requirements of multicolor long persistent luminescence (LPL) materials, we highlight the recent developments in the last decade on human-eye-sensitive LPL materials and try to make a full list of known LPL compounds possessing wavelengths of 400-600 nm and a duration time longer than 10 h (>0.32 mcd/m2); these are more sensitive to the human eye's night vision and can be used throughout the night. We further emphasize our group research of novel LPL materials and the regulation of LPL color to enable a full palette. In the end, we try to summarize the challenges and perspectives of LPL materials for potential research directions based on our limited understandings. This review could offer new enlightenment for further exploration of new LPL materials in the visible light range and related applications.
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Affiliation(s)
- Yuhua Wang
- Key Laboratory for Special Function Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou, China.,Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, China
| | - Haijie Guo
- Key Laboratory for Special Function Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou, China.,Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, China
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15
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Synthesis, crystal structure and photoluminescence properties of novel far-red-emitting SrLaZnSbO6:Mn4+ double-perovskite phosphors for plant cultivation LEDs. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113166] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Tailor JP, Chaki SH, Deshpande MP. Comparative study between pure and manganese doped copper sulphide (CuS) nanoparticles. NANO EXPRESS 2021. [DOI: 10.1088/2632-959x/abdc0d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
The pure CuS and Mn2+ doped CuS nanoparticles are synthesized by wet chemical route. The CuS phase and hexagonal crystal structure is confirmed by the powder X-ray diffraction and Raman analysis. The vibrational bonds present in the respective synthesized samples are confirmed by Fourier transformed infra-red spectroscopy. The spherical shapes of the nanoparticles are validated by the electron diffraction in scanning and transmission mode. The thermal analysis showed the Mn2+ doped CuS nanoparticles to be more stable than pure CuS nanoparticles. The thermal parameters determined using Coats-Redfern relation stated thermal activation energy and enthalpy change values are highest in the higher temperature range. The Seebeck coefficient variation with temperature and ambient condition Hall effect measurements showed the synthesized nanoparticles to be semiconducting and p-type in nature. The magnetic properties study by Gouy method showed the nanoparticles to be paramagnetic.
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Dhoble SJ, Priya R, Dhoble NS, Pandey OP. Short review on recent progress in Mn 4+ -activated oxide phosphors for indoor plant light-emitting diodes. LUMINESCENCE 2020; 36:560-575. [PMID: 33300259 DOI: 10.1002/bio.3991] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/03/2020] [Accepted: 12/06/2020] [Indexed: 01/07/2023]
Abstract
In the modern era, growing number of indoor plants for various purposes, such as vegetation, flowering, and decorations, has increased over the traditional follow-up trends for plantation. However, the indoor plantation requires different parameters for their growth; among these, light plays a significant role. In order to control the growth of plants using light-emitting diodes, Mn-doped oxide phosphors have emerged as promising candidates due to their broad and intense emission bands in the red and far-red spectral range. In this review article, recent progress on Mn-doped oxides for indoor plant growth has been reviewed. This review article is mainly divided into three parts. In the first part, different reaction conditions for the synthesis of Mn-doped oxide phosphors are compared. In the second part, the luminescent and other photometric parameters of these are discussed. The influence of different co-dopants on the luminescent characteristics has been elucidated in detail. The third part discusses the properties of light-emitting diodes fabricated using these phosphors for plant growth. The present review article elucidates the synthesis parameters, luminescent properties, and light-emitting diodes fabricated using Mn-doped oxide materials for plant growth applications.
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Affiliation(s)
- Sanjay J Dhoble
- Department of Physics, R.T.M. Nagpur University, Nagpur, India
| | - Ruby Priya
- Functional Materials Laboratory, School of Physics and Materials Science, Thapar Institute of Engineering & Technology, Patiala, 147004, India
| | - N S Dhoble
- Department of Chemistry, Sevadal Mahila Mahavidhyalaya, Nagpur, India
| | - O P Pandey
- Functional Materials Laboratory, School of Physics and Materials Science, Thapar Institute of Engineering & Technology, Patiala, 147004, India
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18
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Glais E, Massuyeau F, Gautier R. Tuning the Oxidation States of Dopants: A Strategy for the Modulation of Material Photoluminescence Properties. Chemistry 2020; 27:905-914. [DOI: 10.1002/chem.202003074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/27/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Estelle Glais
- CNRS, Institut des Matériaux Jean Rouxel (IMN) Université de Nantes 44000 Nantes France
| | - Florian Massuyeau
- CNRS, Institut des Matériaux Jean Rouxel (IMN) Université de Nantes 44000 Nantes France
| | - Romain Gautier
- CNRS, Institut des Matériaux Jean Rouxel (IMN) Université de Nantes 44000 Nantes France
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19
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Zhu D, Zaffalon ML, Pinchetti V, Brescia R, Moro F, Fasoli M, Fanciulli M, Tang A, Infante I, De Trizio L, Brovelli S, Manna L. Bright Blue Emitting Cu-Doped Cs 2ZnCl 4 Colloidal Nanocrystals. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 32:5897-5903. [PMID: 33814699 PMCID: PMC8016065 DOI: 10.1021/acs.chemmater.0c02017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/05/2020] [Indexed: 05/05/2023]
Abstract
We report here the synthesis of undoped and Cu-doped Cs2ZnCl4 nanocrystals (NCs) in which we could tune the concentration of Cu from 0.7 to 7.5%. Cs2ZnCl4 has a wide band gap (4.8 eV), and its crystal structure is composed of isolated ZnCl4 tetrahedra surrounded by Cs+ cations. According to our electron paramagnetic resonance analysis, in 0.7 and 2.1% Cu-doped NCs the Cu ions were present in the +1 oxidation state only, while in NCs at higher Cu concentrations we could detect Cu(II) ions (isovalently substituting the Zn(II) ions). The undoped Cs2ZnCl4 NCs were non emissive, while the Cu-doped samples had a bright intragap photoluminescence (PL) at ∼2.6 eV mediated by band-edge absorption. Interestingly, the PL quantum yield was maximum (∼55%) for the samples with a low Cu concentration ([Cu] ≤ 2.1%), and it systematically decreased when further increasing the concentration of Cu, reaching 15% for the NCs with the highest doping level ([Cu] = 7.5%). The same (∼2.55 eV) emission band was detected under X-ray excitation. Our density functional theory calculations indicated that the PL emission could be ascribed only to Cu(I) ions: these ions promote the formation of trapped excitons, through which an efficient emission takes place. Overall, these Cu-doped Cs2ZnCl4 NCs, with their high photo- and radio-luminescence emission in the blue spectral region that is free from reabsorption, are particularly suitable for applications in ionizing radiation detection.
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Affiliation(s)
- Dongxu Zhu
- Department
of Chemistry, School of Science, Beijing
JiaoTong University, Beijing 100044, China
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Matteo L. Zaffalon
- Dipartimento
di Scienza dei Materiali, Universitá
degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Valerio Pinchetti
- Dipartimento
di Scienza dei Materiali, Universitá
degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Rosaria Brescia
- Electron
Microscopy Facility, Istituto Italiano di
Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Fabrizio Moro
- Dipartimento
di Scienza dei Materiali, Universitá
degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Mauro Fasoli
- Dipartimento
di Scienza dei Materiali, Universitá
degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Marco Fanciulli
- Dipartimento
di Scienza dei Materiali, Universitá
degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Aiwei Tang
- Department
of Chemistry, School of Science, Beijing
JiaoTong University, Beijing 100044, China
| | - Ivan Infante
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Department
of Theoretical Chemistry, Vrije Universiteit
Amsterdam, De Boelelaan
1083, Amsterdam, 1081 HV The Netherlands
| | - Luca De Trizio
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Sergio Brovelli
- Dipartimento
di Scienza dei Materiali, Universitá
degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Liberato Manna
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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20
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Ilves V, Sokovnin S, Zuev M, Uimin M, Privalova D, Kozlova J, Sammelselg V. Multimodal upconversion CaF2:Mn/Yb/Er/Si nanoparticles. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109457] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Dong L, Zhang L, Jia Y, Shao B, Lü W, Zhao S, You H. Enhancing Luminescence and Controlling the Mn Valence State of Gd 3Ga 5-x-δAl x-y+δO 12: yMn Phosphors by the Design of the Garnet Structure. ACS APPLIED MATERIALS & INTERFACES 2020; 12:7334-7344. [PMID: 31968157 DOI: 10.1021/acsami.9b20915] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Gd3Ga5-x-δAlx-y+δO12:yMn solid solutions with improving luminescence properties were prepared via cation substitution and a controllable Mn valence state. The abnormal autoreduction from Mn4+ to Mn2+ ions was observed during the formation of Gd3Ga5-x-δAlx-y+δO12:yMn. The doped manganese ions occupy octahedral Ga3+(1) and Al3+(1) sites to form the Mn2+ luminescent center with red emission at 630 nm and Mn4+ luminescent centers with deep red light emission at 698 nm, respectively, matching well with the red light absorption of phytochrome (PR) and the far-red light absorption of phytochrome (PFR). With the design of the concentration of Al3+ and doped manganese ions, the photoluminescence (PL) of Mn4+/Mn2+ (corresponding to PFR/PR) can be tuned, which is very useful for controlling the plant growth. Moreover, the PL intensity of Gd3Ga5-x-δAlx-y+δO12:yMn can be increased by 6.8 times by substituting Al3+ for Ga3+. The thermal stability is also enhanced significantly. Finally, a series of warm white-light-emitting diodes (WLEDs) with good performance were fabricated using the as-prepared Gd3Ga5-x-δAlx-0.012+δO12:0.012Mn phosphor. The results show that the designed Gd3Ga5-x-δAlx-y+δO12:yMn phosphors have potential practical values in plant-growth light-emitting diodes (LEDs) and high-performance WLEDs. Moreover, our strategy not only provides a unique inspiration for tuning the valence states of Mn but also designs new advanced luminescent materials.
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Affiliation(s)
- Langping Dong
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
- University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China
| | - Liang Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
- University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China
| | - Yongchao Jia
- European Theoretical Spectroscopy Facility, Institute of Condensed Matter and Nanosciences , Université catholique de Louvain , Chemin des étoiles 8, bte L07.03.01 , B-1348 Louvain-la-Neuve , Belgium
| | - Baiqi Shao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
| | - Wei Lü
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
| | - Shuang Zhao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
- University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China
| | - Hongpeng You
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China
- University of Science and Technology of China , Hefei , Anhui 230026 , People's Republic of China
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22
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Ezerskyte E, Grigorjevaite J, Minderyte A, Saitzek S, Katelnikovas A. TemperatureDependent Luminescence of RedEmitting Ba 2Y 5B 5O 17: Eu 3+ Phosphors with Efficiencies Close to Unity for NearUV LEDs. MATERIALS 2020; 13:ma13030763. [PMID: 32046070 PMCID: PMC7040723 DOI: 10.3390/ma13030763] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/30/2020] [Accepted: 02/05/2020] [Indexed: 12/21/2022]
Abstract
Solid state white light sources based on a near-UV LED chip are gaining more and more attention. This is due to the increasing efficiency of near-UV-emitting LED chips and wider phosphors selection if compared to devices based on blue LED chips. Here, a brief overview is given of the concepts of generating white light employing near-UV LED and some optical properties of the available phosphors are discussed. Finally, the synthesis and optical properties of very efficient red-emitting Ba2Y5B5O17:Eu3+ phosphor powder and ceramics is reported and discussed in terms of possible application as a red component in near-UV LED-based white light sources.
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Affiliation(s)
- Egle Ezerskyte
- Institute of Chemistry, Faculty of Chemistry and Geoscience, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (E.E.); (J.G.); (A.M.)
| | - Julija Grigorjevaite
- Institute of Chemistry, Faculty of Chemistry and Geoscience, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (E.E.); (J.G.); (A.M.)
| | - Agne Minderyte
- Institute of Chemistry, Faculty of Chemistry and Geoscience, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (E.E.); (J.G.); (A.M.)
| | - Sebastien Saitzek
- Université d’ARTOIS, CNRS, Centrale Lille, ENSCL, Université de Lille, UMR 8181, Unité de Catalyse et Chimie du Solide (UCCS), F-62300 Lens, France
| | - Arturas Katelnikovas
- Institute of Chemistry, Faculty of Chemistry and Geoscience, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (E.E.); (J.G.); (A.M.)
- Correspondence: ; Tel.: +37-069-723-123
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23
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Morad V, Cherniukh I, Pöttschacher L, Shynkarenko Y, Yakunin S, Kovalenko MV. Manganese(II) in Tetrahedral Halide Environment: Factors Governing Bright Green Luminescence. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:10161-10169. [PMID: 32952294 PMCID: PMC7493303 DOI: 10.1021/acs.chemmater.9b03782] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 11/14/2019] [Indexed: 05/18/2023]
Abstract
Finding narrow-band light emitters for the visible spectral region remains an immense challenge. Such phosphors are in great demand for solid-state lighting and display application. In this context, green luminescence from tetrahedrally coordinated Mn(II) is an attractive research direction. While the oxide-ligand environment had been studied for decades, much less systematic efforts have been undertaken with regard to halide coordination, especially in the form of fully inorganic halide matrixes. In this study, we synthesized a series of hybrid organic-inorganic Mn(II) halides as well as a range of fully inorganic Zn halide hosts (chlorides, bromides, iodides) doped with Mn(II). In the latter, tetrahedral coordination is attained via substitutional doping owing to the tetrahedral symmetry of Zn sites. We find that the choice of the halide as well as subtle details of the crystal structure profoundly govern the photoluminescence peak positions (500-550 nm range) and emission line widths (40-60 nm) as well as radiative lifetimes (shorter for iodides) through the altered ligand-field effects and degrees of spin-orbit coupling. The photoluminescence quantum yields were as high as 70-90%. The major hurdle for the practical use of these compounds lies in their low absorption coefficients in the blue spectral regions.
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Affiliation(s)
- Viktoriia Morad
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Ihor Cherniukh
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Lena Pöttschacher
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Yevhen Shynkarenko
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Sergii Yakunin
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Maksym V. Kovalenko
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- E-mail:
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24
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Selvaraj J, Mahesh A, Baskaralingam V, Dhayalan A, Paramasivam T. Organic-to-water dispersible Mn:ZnS–ZnS doped core–shell quantum dots: synthesis, characterization and their application towards optical bioimaging and a turn-off fluorosensor. NEW J CHEM 2019. [DOI: 10.1039/c9nj02222h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dot-in-dot core/shell Mn:ZnS/ZnS QDs as a good fluorescent agent for bioimaging and a turn-off fluorescent probe for detection of heavy metal ions.
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Affiliation(s)
- Joicy Selvaraj
- Centre for Nanoscience and Technology
- Pondicherry University
- Puducherry – 605 014
- India
| | - Arun Mahesh
- Department of Biotechnology
- Pondicherry University
- Puducherry – 605 014
- India
| | | | - Arunkumar Dhayalan
- Department of Biotechnology
- Pondicherry University
- Puducherry – 605 014
- India
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25
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Sun L, Devakumar B, Liang J, Li B, Wang S, Sun Q, Guo H, Huang X. Thermally stable La2LiSbO6:Mn4+,Mg2+far-red emitting phosphors with over 90% internal quantum efficiency for plant growth LEDs. RSC Adv 2018; 8:31835-31842. [PMID: 35547514 PMCID: PMC9085872 DOI: 10.1039/c8ra06435k] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/05/2018] [Indexed: 01/29/2023] Open
Abstract
In this paper, we reported on the high-efficiency and thermally-stable La2LiSbO6:Mn4+,Mg2+ (LLS:Mn4+,Mg2+) far-red emitting phosphors. Under 338 nm excitation, the composition-optimized LLS:0.3%Mn4+,1.6%Mg2+ phosphors which were made up of [SbO6], [LiO6], and [LaO8] polyhedrons, showed intense far-red emissions peaking at 712 nm (2Eg → 4A2g transition) with internal quantum efficiency as high as 92%. The LLS:0.3%Mn4+,1.6%Mg2+ phosphors also exhibited high thermal stability, and the emission intensity at 423 K only reduced by 42% compared with its initial value at 303 K. The far-red light-emitting device has also been made by using the LLS:0.3%Mn4+,1.6%Mg2+ phosphors and a 365 nm emitting InGaN chip, which can emit far-red light that is visible to the naked eye. Importantly, the emission spectrum of the LLS:0.3%Mn4+,1.6%Mg2+ phosphors can match well with the absorption spectrum of phytochrome PFR, indicating the potential of these phosphors to be used in plant growth light-emitting diodes. Double perovskite La2LiSbO6:Mn4+,Mg2+ far-red emitting phosphors with internal quantum efficiency as high as 92% and good thermal stability were developed for plant growth LEDs.![]()
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Affiliation(s)
- Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Jia Liang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Shaoying Wang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Qi Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Heng Guo
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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26
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Zhong J, Chen D, Chen X, Wang K, Li X, Zhu Y, Ji Z. Efficient rare-earth free red-emitting Ca2YSbO6:Mn4+,M(M = Li+, Na+, K+, Mg2+) phosphors for white light-emitting diodes. Dalton Trans 2018; 47:6528-6537. [DOI: 10.1039/c8dt00992a] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure, luminescence and practical application of non-rare-earth doped double perovskite Ca2YSbO6:Mn4+red phosphors are reported.
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Affiliation(s)
- Jiasong Zhong
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Daqin Chen
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
- College of Physics and Energy
| | - Xiao Chen
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Keyuan Wang
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Xinyue Li
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Yiwen Zhu
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Zhenguo Ji
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
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27
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Sun L, Liang J, Devakumar B, Sun Q, Wang S, Li B, Huang X. Preparation, characterization, and luminescence properties of double perovskite SrLaMgSbO6:Mn4+ far-red emitting phosphors for indoor plant growth lighting. RSC Adv 2018; 8:35187-35194. [PMID: 35547070 PMCID: PMC9087209 DOI: 10.1039/c8ra06983b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/08/2018] [Indexed: 12/04/2022] Open
Abstract
Mn4+-activated SrLaMgSbO6 far-red emitting phosphors with double perovskite structure were prepared by traditional solid-state reaction. The research on the crystal structure of the SrLaMgSbO6:0.8%Mn4+ (SLMS:0.8%Mn4+) phosphors showed that the as-prepared sample was made up of two polyhedrons, [SbO6] and [MgO6]. Under the excitation of 333 nm, the SLMS:0.8%Mn4+ phosphors exhibited an intense far-red emission in the 625–800 nm wavelength range with CIE chromaticity coordinates of (0.733, 0.268), which could match well with the absorption spectrum of phytochrome PFR. The optimal concentration of Mn4+ ions in the SLMS:Mn4+ phosphors was 0.8 mol%. Importantly, the as-prepared SLMS:0.8%Mn4+ phosphors had an internal quantum efficiency of 35%. The thermal stability of SLMS:0.8%Mn4+ phosphors was also investigated, and the activation energy was found to be 0.3 eV. Thus, the Mn4+-activated SLMS phosphors have great potential to serve as far-red emitting phosphors in indoor plant growth lighting. Novel far-red emitting double perovskite SrLaMgSbO6:Mn4+ phosphors were prepared and their photoluminescence properties were studied for applications in indoor plant growth lighting.![]()
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Affiliation(s)
- Liangling Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Jia Liang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Balaji Devakumar
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Qi Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Shaoying Wang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Bin Li
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Xiaoyong Huang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
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28
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Liang J, Sun L, Devakumar B, Wang S, Sun Q, Guo H, Li B, Huang X. Far-red-emitting double-perovskite CaLaMgSbO6:Mn4+ phosphors with high photoluminescence efficiency and thermal stability for indoor plant cultivation LEDs. RSC Adv 2018; 8:31666-31672. [PMID: 35548243 PMCID: PMC9085751 DOI: 10.1039/c8ra06708b] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022] Open
Abstract
A series of Mn4+-activated CaLaMgSbO6 far-red-emitting phosphors were synthesized by a solid-state reaction route and the microstructure and optical characterizations were investigated in detail. Upon excitation at 370 and 469 nm, the samples showed intense far-red emission at about 708 nm originating from the 2Eg → 4A2g transition and the optimal Mn4+ concentration was 0.7 mol%. The as-prepared phosphors also exhibited excellent internal quantum efficiency (88%) and high thermal stability. The emission intensity at room temperature dropped to 54% when the temperature rose to 423 K and the activation energy was 0.34 eV. The outstanding optical properties and the fact that the emission band of the obtained phosphors had a broad overlap with the absorption band of phytochrome PFR demonstrated that the CaLaMgSbO6:Mn4+ phosphors may be promising potential spectral converters for applying to indoor plant cultivation light-emitting diodes. Far-red-emitting double-perovskite CaLaMgSbO6:Mn4+ phosphors with high quantum efficiency and thermal stability were developed for potential applications in indoor plant cultivation LEDs.![]()
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Affiliation(s)
- Jia Liang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Shaoying Wang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Qi Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Heng Guo
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| |
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